| エコシステム | タイプ | 地位 | 参照 |
|---|---|---|---|
| Amazon | River (basin) | native | 28798 |
| Negro | River (basin) | native | 28798 |
| Neotropical | Zoogeographic realm | endemic | 28798 |
| Orinoco | River (basin) | native | 28798 |
| Pará-Tocantins | River (basin) | native | 28798 |
| Paraguay | River (basin) | native | 28798 |
| Paraná | River (basin) | native | 28798 |